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lose of vacuum to heater deverter valve.follow heater hoses from engine to heater core valve has two hoses in and two hoses out and one vacuum hose.vacuum hose gose to tee then back to engine other vacuum from tee controls heater switch defrost to floor heat knob. replace all of these lines about 6 feet will do it.now the bad, you must pull back the dog house about a foot divers side to remove one vacuum hose just do it the first time and both problems should go away.
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Where is the fast idle thermal valve in a 1997 Chevy astro van located?
Is anyone on line to help me with this question? Where is the fast idle thermal valve in a 1997 Chevy astro van located?
Why would a 1992 Chevy astro cs rev irratically in idle?
vacuum leak, bad idle control sensor
87 Chevy astro is high idleing when started and warmed up?
There are a few things that could cause an 87 Chevy Astro to idle high when it is started and warmed up. It could be a bad fuse, a leak in the vacuum, or an issue with the throttle.
If you replaced tps iac throttle body gasket why is the idle still high ON A 1999 CHEVY ASTRO VAN 2 WHEEL DRIVE 4.3 LITER ENGINE?
You can adjust the idle from the throttle body. Replacing the throttle body might have accidentally change the idle speed. The idle speed adjustment screw can be turned either way to raise or lower the idle.
How do you get the idle to go down in a 1993 Chevy z28 camaro?
The idle speed is computer controlled on a LT1 engine. If it is a little high, try checking for vacuum leaks.
Where is the in a Idle control valve 1994 Chevy blazer?
If you are talking about the air idle control valve it is a little square black box with two bolts and a plug on top of your engine block.
1997 astro van misses at idle and driving?
inspect the distributor gear.
How do you set the idle on a 1992 Chevy Corvette?
Idle is set by the computer.
How do you idle up your Chevy truck?
For non fuel injected models, on the side of the carburetor there is an idle screw. Turning the screw slightly will raise the idle on your Chevy truck.
Where is the idle speed motor located at on a 1995 Chevy blazer?
Where is the idle speed motor located at on a 1995 chevy blazer?
Where is the idle on a Chevy 350?
carborator
How do you set the idle on a 2005 Chevy pickup?
The IDLE is controlled by the computer. THERE IS NO ADJUSTMENT.
